If 2 kg of metal, of which 1/3 is zinc and the rest is copper s, be mixed with 3 kg of metal , of which 1/4 is zinc and the rest is copper , then what will be the ratio of zinc to copper in the mixture?

By what percentage above the cost price ,a fan should be sold if a shopkeeper wants to make a profit of Tk. 50...

Out of two numbers, 4 times the smaller one is less than 3 times the larger one by 5, if the sum of the number...

The sum of the squares of these three numbers is 532 and the ratio of the first and the second as also of the...

Pipe P can fill and empty tank in 4 hours but pipe Q can completely empty the same tank in 8 hours. But the pi...

The average age of A, B And C sis 30 years. If the difference between B's age and A's age is same as the diffe...

The humidity of air measured in percentage is called -